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Measurement of neutron cross sections and resonance parameters of 169Tm below 100 eV

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【作者】 王文明； 李霞； 赵志祥； 周祖英； 于洪伟； 吴海成； 魏义祥； T.F. Wang； G.N. Kim； M.W. Lee； K.S. Kim； M.H. Cho； I.S. Ko； W. Namkung；

【Author】 WANG Wen-Ming1;1) LI Xia1 ZHAO Zhi-Xiang1 ZHOU Zu-Ying1 YU Hong-Wei1 WU Hai-Cheng1 WEI Yi-Xiang2 T.F.Wang3 G.N.Kim3 M.W.Lee3 K.S.Kim3 M.H.Cho4 I.S.Ko4 W.Namkung41 China Institute of Atomic Energy,Beijing 102413,China 2 Department of Engineering Physics,Tsinghua University,Beijing 100084,China 3 Department of Physics,Kyungpook National University,Daegu 702-701,Republic of Korea 4 Department of Physics,Pohang University of Science and Technology,Pohang 790-784,Republic of Korea

【机构】 China Institute of Atomic Energy； Department of Engineering Physics,Tsinghua University； Department of Physics,Kyungpook National University； Department of Physics,Pohang University of Science and Technology；

【摘要】 The neutron total cross-sections of thulium(169Tm) were measured in the neutron energy region from 0.01 eV to 100 eV by using the time-of-flight method at the Pohang Neutron Facility,which consists of an electron linac,a water-cooled tantalum target with a water moderator,and a 12 m time of flight path.Two thulium plates with different thicknesses were used for the neutron transmission measurement.The background level was determined by using a notch-filter of Co,In,and Cd sheets.The present measurement was compared with the previous ones,and a new set of resonance parameters of 169Tm isotope was obtained from the transmission rate by using the SAMMY code,with a comparison with the recommended parameters by Mughabghab.

【Abstract】 The neutron total cross-sections of thulium(169Tm) were measured in the neutron energy region from 0.01 eV to 100 eV by using the time-of-flight method at the Pohang Neutron Facility,which consists of an electron linac,a water-cooled tantalum target with a water moderator,and a 12 m time of flight path.Two thulium plates with different thicknesses were used for the neutron transmission measurement.The background level was determined by using a notch-filter of Co,In,and Cd sheets.The present measurement was compared with the previous ones,and a new set of resonance parameters of 169Tm isotope was obtained from the transmission rate by using the SAMMY code,with a comparison with the recommended parameters by Mughabghab.

【关键词】 resonance parameters； thulium； n-TOF method； SAMMY；
【Key words】 resonance parameters； thulium； n-TOF method； SAMMY；
【基金】 the staff of the Pohang Accelerator Laboratory for the excellent operation of the electron linac and their strong support
  • 【文献出处】 中国物理C ,Chinese Physics C , 编辑部邮箱 ,2010年02期
  • 【分类号】O571.55
  • 【下载频次】21
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